Phase Evolution and Mechanical Behavior of a Novel Ti–6.3Cu–2.2Fe−2.1Al Alloy Processed by Wire-Arc Directed Energy Deposition

Klein, Martin; Staufer, Ella; Zhang, Duyao; Edtmaier, Christian; Horky, Jelena; Schmitz-Niederau, Martin; Qiu, Dong; Easton, Mark; Klein, Thomas

doi:10.1007/s11661-025-07766-9

Record link:

http://hdl.handle.net/20.500.12708/215244

Title:

Phase Evolution and Mechanical Behavior of a Novel Ti–6.3Cu–2.2Fe−2.1Al Alloy Processed by Wire-Arc Directed Energy Deposition

Citation:

Klein, M., Staufer, E., Zhang, D., Edtmaier, C., Horky, J., Schmitz-Niederau, M., Qiu, D., Easton, M., & Klein, T. (2025). Phase Evolution and Mechanical Behavior of a Novel Ti–6.3Cu–2.2Fe−2.1Al Alloy Processed by Wire-Arc Directed Energy Deposition. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE. https://doi.org/10.1007/s11661-025-07766-9

Publisher DOI:

10.1007/s11661-025-07766-9

Publication Type:

Article - Short/Brief/Rapid Communication

Language:

English

Authors:

Klein, Martin
Staufer, Ella
Zhang, Duyao
Edtmaier, Christian
Horky, Jelena
Schmitz-Niederau, Martin
Qiu, Dong
Easton, Mark
Klein, Thomas

Organisational Unit:

E164-03-1 - Forschungsgruppe Anorganische Werkstoffe

Journal:

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE

ISSN:

1073-5623

Date (published):

15-Apr-2025

Number of Pages:

Publisher:

SPRINGER

Peer reviewed:

Yes

Keywords:

Titanium alloys; Additive Manufacturing; Intermetallic precipitation

Abstract:

Lacking Ti-alloy wires tailored for wire-arc directed energy deposition (waDED) restricts AM-component implementation. Ti–Cu alloys show potential but require additional elements to enhance performance. In this work, waDED-processed Ti–6.3Cu–2.2Fe−2.1Al is characterized. Addition of Cu to Ti achieves a columnar-to-equiaxed transition. The microstructure consists of fine Ti2Cu precipitates, β matrix, and α plates, with varying morphologies along the deposit’s height due to differing thermal histories. The as-built sample exhibits a σY of 1039 MPa but low ductility.

Project title:

Neuartige hochfeste Titanlegierungen für Luftfahrtanwendungen: 886889 (FFG - Österr. Forschungsförderungs- gesellschaft mbH)

Project (external):

Australian Research Council

Project ID:

DE210101503 ; DP220101501

Research Areas:

Metallic Materials: 75%
Materials Characterization: 25%

Science Branch:

2111 - Metallurgie: 50%
2050 - Werkstofftechnik: 50%

License:

CC BY 4.0